You hold your hands out to the area you want to effect and concentrate for 10 minutes on what you want the terrain you are attempting to change to look like. You make any terrain in a 150-foot cube in range look, sound, and smell like some other sort of terrain that the holder has imagined. Thus, open fields or a road can be made to resemble a swamp, hill, crevasse, or some other difficult or impassable terrain. A pond can be made to seem like a grassy meadow, a precipice like a gentle slope, or a rock-strewn gully like a wide and smooth road. Manufactured structures and equipment within the area are changed in appearance as well. A floor full of holes can look completely whole. Creatures do not change with the terrain
The tactile characteristics of the terrain are unchanged, so creatures entering the area are likely to see through the illusion. If the difference isn't obvious by touch, a creature carefully examining the illusion can attempt an Intelligence (Investigation) check against 18 DC to disbelieve it. A creature who discerns the illusion for what it is, sees it as a vague image superimposed on the terrain.
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